Effect of the number of screws on the stability of locking mandibular reconstruction plates
Valfrido Antônio Pereira-FilhoB.N. da SilvaJosé Maurício dos Santos Nunes ReisRubens Spin‐NetoMarisa Aparecida Cabrini GabrielliMarcelo Silva Monnazzi
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Keywords:
Mandibular fracture
Bite force quotient
Mandible (arthropod mouthpart)
Fracture of the styloid process (SP) of temporal bone is an uncommon injuries. Fracture of the SP can be associated with the facial injuries including mandible fracture. However, injury to the SP may be concealed and missed diagnosis may lead to the improper or various unnecessary treatments. A rare case of SP fracture associated with the ipsilateral mandibular fracture and also the diagnostic and management considerations of the SP fracture are discussed.
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To compare the maximum voluntary bite force generated at different periods during mandibular fracture healing using miniplates and microplates as means of rigid internal fixation.Maximum voluntary bite force was recorded in healthy young individuals of different age group from either gender. Patients suffering from symphyseal and parasymphyseal and body fractures were selected and randomly treated using miniplate and microplate osteosynthesis by open reduction and rigid internal fixation. Postoperative bite forces at intervals of 1st, 2nd, 4th, and 6th week were recorded and compared with control group.It was noticed that bite forces were significantly reduced in the study groups in comparison to control group and at different intervals of treatment. There was a progressive improvement in the bite force with passage of time. There was no statistical significance in the observed bite force in both the study groups at different intervals of assessment.1.5 mm microplates provide adequate stability comparable to miniplates for the treatment of fractured mandible and should be preferred over miniplates. We further suggest that bite forces should be considered for the assessment of clinical union of bone as well as studies pertaining to selection of hardware for rigid internal fixation.
Bite force quotient
Mandibular fracture
Osteosynthesis
Mandible (arthropod mouthpart)
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Bite force quotient
Mandibular fracture
Biting
Mandible (arthropod mouthpart)
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Objective:To evaluate application of circumandibular fixation in treating with child mandibular fracture.Methods:7 children selected from 12 cases received circumandibular fixation since 1995, and the effect of treatment was assessed. Results:Circumandibular fixation has no injure to permanent teeth germ,an excellent fracture-repositon, stable fixation, no interferece with eating and is beneficial of mouth clearness. Conclusions:It is an effective method of fixation for child mandibular fracture.
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Maxillofacial fractures under 10 years of age are uncommon, with an occurrence of 7.3%. Isolated fractures of the mandible are even more rare, due to the fact that in young children the mandible is relatively small and resilient. Some authors suggest that the occurrence of this form of fracture is about 1-5%. Different methods have been described for treatment of fractures off the mandible in children. In the therapy since the introduction of titanium mini plates the trend has been to select surgical repositioning followed by osteosynthesis. This paper describes the management of a 7-month old boy with isolated mandibular fracture, using this method to avoid the damage of the tooth germs. This particular case raises the issue of child abuse, which is on the increase in Hungary as well. To find a kind of solution would be not only a task of dentists but also of society in general.
Mandible (arthropod mouthpart)
Osteosynthesis
Mandibular fracture
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Mandibular fracture
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Objective To know and discuss the clinical charicristics of mandible fracture and related problems of treatment process. Methods 1741 cases of fracture of mandibular of age ,sex, reason, the coexisted wound ,the style of fracture, therapy and the complications of operation were analyzed respectively. Results The male whose age from 20 to 40 have good and much hair. The main reason of mandible fracture is traffic accidents. The commonly seen position of fracture is chin. 34.95 percent patients have coexisted fracture of middle face and suffering injuries to the skull and extremity. The operation is the main treatment in this cases. Conclusion The fracture of mandible is in the young man. The main reason of mandible fracture is traffic accidents. To firm inner immobilization can accelerate the healing of fracture.
Mandible (arthropod mouthpart)
Mandibular fracture
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Bite force quotient
Mandibular fracture
Biting
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The objective of this study is to analyze the difference in bite forces in patients treated for mandibular fractures with 2.0 mm conventional and locking titanium plating system. A randomized study was performed for the treatment of fractures of mandible. In this study, 20 adult patients with isolated mandibular fracture were included. The patients were randomly allocated into two groups, that is, Group I-2.0 mm nonlocking (traditional) and Group II-2.0 mm locking plates. Bite force was evaluated at 1st, 3rd, and 6th weeks. Comparison of all the assessed parameters between both the groups depicted no significant difference in terms of pain, swelling including the incidence of infection, paresthesia, and hardware failure. Although same was true in case of bite force between both the groups at various time intervals, there was statistically significant increase in the bite force within the group comprising patients in whom locking plates was used between 1st and 3rd weeks follow-up period and highly significant increase in bite force between 1st and 6th weeks of follow-up period. The rapid improvement of bite force values when locking plates were used implies that the locking plate can be used in preference to conventional plates to achieve early mobilization with assured stability in the treatment of mandibular fractures.
Bite force quotient
Mandibular fracture
Mandible (arthropod mouthpart)
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A three-dimentional finite element model of a human mandible was presented, which is tended to make clear the mandible fracture mechanism. In making a numerical analysis, lateral and vertical loads were applied changing direction on the finite clement model of the human mandible. The tendency of the fracture was valuated for each case. Then, it was observed that in many cases the fracture was caused at the condylar process, and at the portion where the loads were applied to the inner side, fractures tended to be severer on the inner side than on the outer side. It was shown that the location and direction of loading were important factors to determine the fracture tendency.
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